def main():
    X = int(input())
    c = 600
    k = 8
    while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1

if __name__ == '__main__':
    main() def main():
    X = int(input())
    c = 600
    k = 8
    while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1 main X = int(input()) X int(input()) int input() input c = 600 c 600 k = 8 k 8 while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1 True if X < c:
            print(k)
            break
         X < c X c print(k) print k break c += 200 c 200 k -= 1 k 1 if __name__ == '__main__':
    main() __name__ == '__main__' __name__ '__main__' main() main def main():
    X = int(input())
    c = 600
    k = 8
    while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1 def main():
    X = int(input())
    c = 600
    k = 8
    while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1 main
def main():
    X = int(input())
    c = 600
    k = 8
    while True:
        if X < c:
            print(k)
            break
        c += 200
        k -= 1

if __name__ == '__main__':
    main()